Week 7 Image

Answer: Acute asthma exacerbation with increased lung volumes on chest x-ray. The lateral projection reveals enlargement of the retrosternal clear space (arrow). (Used with permission from Carlos Santiago Restrepo, MD.)

From Usatine RP, Smith MA, Chumley HS, et al. The Color Atlas of Pediatrics. New York, NY: McGraw-Hill; 2015.